Bookbinding



(No Model.)

D. K; *HOWB.

- BOOKBI'NDING.

Patnted Aug. 1, 1893.

h'si Z Zorn- 2 UNITED STATES PATENT OFFICE.

DANIEL K. HOWE, OF PORTLAND, OREGON.

BOOKBINDING.

SPECIFICATION forming part of Letters Patent No. 502,493, dated August1, 1893.

Application filed April 29, 1892. Serial No. 431,210. (No model.)

To all whom it may concern.-

Be it known that I, DANIEL K. HOWE, a citizen of the United States,residing at Portland, Multnomah county, and State of Oregon, haveinvented a new and useful Improvement in Bookbinding, of which thefollowing isa specification, reference being had to the accompanyingdrawings as a part 'hereof.

My invention concerns theimprovement of the present usual method ofbinding books in which it is desirable that the leaves thereof lie fiatat whatever page the book may be opened. The usual way of accomplishingsuch binding is by attaching a series of clusters of leaves to the inneror upper apexes of a series of zigzag folds of a stub-strip, and myinvention has for its object the improvement of this stub-strip for thepurpose of simplifying and facilitating the labor of attaching theleaves of the book thereto. A continuous stub-stri p is seriouslyobjectionable, for the weight of the paper of the leaves, as clusterafter cluster is attached to such stub-strip becomes greater andgreater, all of which the operator must support more or less withmuscular force, which is, therefore, very tiring, while if the clustersof leaves are separately attached to separate sections of a stub-stripand then joined together the operator is relieved from the exertion ofsupporting the weight of a number of clusters of leaves at one time, andmay therefore work more rapidly.

My invention is, therefore, designed to use a stub-strip composed ofseparate sections which maybe separatelyattached to thebridge strip,andwhich are adapted to interlock with each other when so attached.

The manner of carrying my invention into effect will appear from theaccompanying drawings, in which- Figure l is a partial end View. Fig. 2is also a partial end view on a larger scale, showing the way in whichmy separate stub-strip sections interlock with each other when attachedto the bridge strip; and Fig. 3 is a partial top view of sections of myimproved stub strip.

Like letters refer to like parts throughout the several views.

My stub-strip is represented by A in the drawings, and the sectionsthereof by a, and a the same being constructed out of some suitablematerial or layers of material having sufficient stiifness. The separatesections are then suitably folded as shown, theleaf-clusters d attachedto the apexes of such folds and finally the sections attached to thebridge strip as shown in Fig. 2. When thus attached and arranged theloose ends I) of section (1. will be locked in between the end folds ofsection a and vice versa, and the loose ends 0 of said section a? willbe locked in between the end folds of section a. The advantages of thisarrangement are apparentfrom what has already been stated to allfamiliar with the art of book binding without further detailing.

I am aware that stub strips in books have heretofore been constructed inseparate sections. My invention does not cover this, but consists in animprovement in the construction of such stub strip sections whereby theyare adapted to unite with each other when attached to the bridge stripsin the manner above described.

What I claim, therefore, is"

A book having a stub-strip consisting of a series of separatealternating sections, a and 0. made of suitable material, each of saidsections having unattached ends, I), and 0, projecting conversely withrespect to each other, the end folds of the respective sections adapted,when attached to the bridge strips, to interlock with each other,substantially as described and set forth.

DANIEL K. HOWE.

Witnesses:

WILEY B. ALLEN, T. J. GEISLER.

